Disk Quotas in Linux - Quick HOWTO

Here is the simple quick guide to setup disk quotas in Linux. Please post your comments

 Uses of Disk quotas:

  1. Limits disk usage (blocks or inodes)

  2. Tied to file systems (set on a per file system basis)

  3. Can be configured for users and groups


Steps to enable quota support:

 1. Enable quota support per file system in: /etc/fstab

  Add  defaults,usrquota,grpquota in end of the line for the file system you want enable quota

 2. Remount the file system(s)

  a. mount -o remount /

  b. use 'mount' to confirm that 'usrquota,grpquota' support are enabled

 3. Create quota database files and generate disk usage table

  a. quotacheck -mcug / - this creates /aquota.user & /aquota.group

  b. quotacheck -mavug

 4. Assign quota policies

  a. edquota username - set blocks/inodes soft_limits hard_limit

     edquota student1 - sets quotas for user 'student1'

     export EDITOR=nano - to have edquota default to 'nano' editor

5. Check quotas

  a. quota username

     quota student1 

Note: place 'quotacheck -avug' in /etc/cron.*(hourly,daily) 

6. Report on usage

  a. repquota -a - this reports on usage

 Note: The blocks are measured in 1K increments. i.e. 20000 blocks is roughly 20MB

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